ZedGraph控件常用方法和属性总结

Posted 2022-02-02 Thomas会写字

最近在WPF使用ZedGraph控件，发现这个控件的功能很强大，据说采用了双缓冲机制来绘制图，只要控制好显示的帧速，能够显示速度较快的动态图。

参考：https://blog.csdn.net/qq_26093511/article/details/51329059

1、常用属性设置

            zedGraphControl2.IsShowPointValues = true;  //鼠标经过图表上的点时是否气泡显示该点所对应的值
            zedGraphControl2.IsZoomOnMouseCenter = true;//使用滚轮时以鼠标所在点进行缩放还是以图形中心进行缩放  true为以鼠标所在点进行缩放
            zedGraphControl2.Graphpane.Title.Text = "Spectrogram";
            zedGraphControl2.GraphPane.XAxis.Title.Text = "WaveLength/nm";
            zedGraphControl2.GraphPane.YAxis.Title.Text = "Intensity";
            //设置X、Y轴范围
            zedGraphControl2.GraphPane.XAxis.Scale.Min = 0;//MainWindow.waveData[1] - 3;              //X轴最小值0 x轴的两边留出一定余量           
            zedGraphControl2.GraphPane.XAxis.Scale.Max = 512;// MainWindow.waveData[512] + 3;
            zedGraphControl2.GraphPane.YAxis.Scale.Min = 0;
            zedGraphControl2.GraphPane.YAxis.Scale.Max = 4000;           //这里要改成动态的，大小随波形改变
            // zedGraphControl2.GraphPane.YAxis.Scale.MaxAuto = true;//根据数值的大小自动的设置Y轴的大小
 
            //设置X、Y轴的刻度大小
            zedGraphControl2.GraphPane.XAxis.Scale.MinorStep = 5;     //X轴小刻度 小跨度
            zedGraphControl2.GraphPane.XAxis.Scale.MajorStep = 50;    //X轴显示的最大大刻度
            // zedGraphControl2.GraphPane.YAxis.Scale.MinorStep = 100;
            //zedGraphControl2.GraphPane.YAxis.Scale.MajorStep = 1000;
            zedGraphControl2.GraphPane.YAxis.Scale.MajorStepAuto = true;//自动设置Y轴的大刻度大小
            zedGraphControl2.GraphPane.YAxis.Scale.MinorStepAuto = true;//自动设置Y轴的小刻度大小
            zedGraphControl2.GraphPane.YAxis.Scale.IsUseTenPower = false;//Y轴不以10的幂显示
            zedGraphControl2.AxisChange();
 
            //将X、Y轴的对面坐标轴隐藏
            zedGraphControl2.GraphPane.XAxis.MajorTic.IsOpposite = false;
            zedGraphControl2.GraphPane.YAxis.MajorTic.IsOpposite = false;
            zedGraphControl2.GraphPane.YAxis.MinorTic.IsOpposite = false;
            zedGraphControl2.GraphPane.XAxis.MinorTic.IsOpposite = false;
 
            //zedgraph显示参考线/辅助线/网格线
            zedGraphControl2.GraphPane.XAxis.MajorGrid.IsVisible = true;
            zedGraphControl2.GraphPane.YAxis.MajorGrid.IsVisible = true;
            //控制x,y轴
            zedGraphControl2.IsEnableHZoom = false;//不允许横向缩放

2、常用方法设置

     这个控件的常用方法有保存图片、打印预览、打印、复制图表到剪贴板、图表自适应等。

       //保存图片
        private void Save_image_Click(object sender, RoutedEventArgs e)
        
            zedGraphControl2.SaveAs();//打开图像另存为对话框   此处调用zedgraph控件的内部功能
        
        //打印预览
        private void PrintPreview_Click(object sender, RoutedEventArgs e)
        
            zedGraphControl2.DoPrintPreview();
        
        //打印当前图片
        private void Print_Click(object sender, RoutedEventArgs e)
        
            zedGraphControl2.DoPrint();
        
        //打印设置对话框
        private void PrintPageSetup_Click(object sender, RoutedEventArgs e)
        
            zedGraphControl2.DoPageSetup();
        
        //复制图片到剪贴板
        private void CopyImage_Click(object sender, RoutedEventArgs e)
        
            zedGraphControl2.Copy(true);
        

3、添加标签功能设置

给要绘制的曲线的某个点上添加一个标签。

 

 LineItem ADCurve=  zedGraphControl2.GraphPane.AddCurve("AD", frameList, Data .adLineColor , SymbolType.None);//生成曲线和图例 ，标签加到这条线上的某个点
PointPair pt = ADCurve.Points[maxXValue];//获取线条上最大值点坐标  maxXValue代表第几个元素
double showX = 0;
string label = showX.ToString("f2") + "," + maxYValue.ToString("f2");
TextObj text = new TextObj(label, pt.X, pt.Y - 10, CoordType.AxisXYScale, AlignH.Left, AlignV.Center);//设置标签要显示的内容和位置
text.FontSpec.Border.IsVisible = true;//添加标签的边框
text.FontSpec.Fill.IsVisible = true;//对标签填充颜色
text.FontSpec.Fill.Color = System.Drawing.Color.WhiteSmoke;
text.FontSpec.Angle = 0;//横向显示
zedGraphControl2.GraphPane.GraphObjList.Add(text);//标签添加到图上